Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September signifies a gentle decline in Rockneby's average high-temperature, easing from a pleasant 20.8°C (69.4°F) in August to a comfortable 16.7°C (62.1°F). During September nights, Rockneby records an average temperature of 11.3°C (52.3°F).Humidity
In September, the average relative humidity is 78%.Rainfall
In September, in Rockneby, the rain falls for 10.3 days. Throughout September, 18mm (0.71") of precipitation is accumulated. Throughout the year, there are 127.2 rainfall days, and 299mm (11.77") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 46min.On the first day of September, sunrise is at 05:58 and sunset at 19:50. On the last day of the month, sunrise is at 06:57 and sunset at 18:31 CEST.
Sunshine
In Rockneby, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Rockneby is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Be vigilant - Preventing sunburn is recommended. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What is the temperature in September in Rockneby?
What is the average humidity in September in Rockneby?
How many days does it rain in September in Rockneby?
When it does not snow in Rockneby?
Does it snow in Rockneby in September?
How many hours of daylight does Rockneby have in September?
What time are sunrise and sunset in September in Rockneby?
How long on average sun shines in September in Rockneby?
What is the UV index intensity in September in Rockneby?
Average temperature in September
Rockneby, Sweden
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is July (21°C).
The month with the lowest average high temperature is January (1.6°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is July (14.1°C).
The coldest months (with the lowest average low temperature) are January and February (-1.3°C).
Average pressure in September
Rockneby, Sweden
- Average pressure in September: 1014.9mbar
The months with the highest atmospheric pressure are April and May (1015.4mbar).
The month with the lowest atmospheric pressure is December (1010.2mbar).
Average wind speed in September
Rockneby, Sweden
- Average wind speed in September: 16.3km/h
The windiest month (with the highest average wind speed) is December (18.8km/h).
The calmest month (with the lowest average wind speed) is May (14.1km/h).
Average humidity in September
Rockneby, Sweden
- Average humidity in September: 78%
The months with the highest relative humidity are January, February, November and December (86%).
The months with the lowest relative humidity are April and May (71%).
Average rainfall in September
Rockneby, Sweden
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is July (36mm).
The driest month (with the least rainfall) is April (10mm).
Average rainfall days in September
Rockneby, Sweden
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in September
Rockneby, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (84mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Rockneby, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rockneby, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Rockneby, Sweden
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in September
Rockneby, Sweden
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Rockneby, Sweden
- Average cloud cover in September: 39
The months with the most cloud cover are January and February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Rockneby, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
Rockneby, Sweden
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